chapter 4 stuff Flashcards
cryotherapy
cold treatment
ecchymosis
abnormal condition of blood under the tissues (a bruise)
what is a Mohs procedure
thin layers are scraped off the skin at an area of concern until the samples come back clean
what 3 elements does skin protect the body from
uv rays, pathogens, physical damage
how does skin regulate the body’s temp
produces sweat which evaporates and removes heat from the body
which layer of skin stores fat
hypodermis/subcutaneous layer
what causes someone’s hair to stand on end
arrector pili muscles in the dermis contract and pull the hair up when someone is cold or scared
4 major functions of skin
protection, body temp control, excretion, perception of stimuli
outermost layer of skin
epidermis
melanocytes
cells that produce dark brown or black pigment
protective function of melanin
protects from uv rays
oil produced by sebaceous glands
sebum
connective tissue in the skin
collagen
lunula
half moon-shaped structure found in the nail
abnormally raised and thickened scar
keloid
macule
a freckle
vesicle
small, raised skin lesion filled with clear fluid
fissure
crack or grove in skin
wheal
smooth, slightly swollen area redder or paler than the surrounding skin
ulcer
open sore or erosion of the skin
papule
solid skin elevation with distinct borders
pustule
small, infected skin elevation that contains pus
cycst
closed, thick-walled sac containing fluid
macula
small, flat, discolored lesion
nodule
skin elevation larger than one centimeter
nevus
highly pigmented lesion
